PREFIX aocat: <https://www.ariadne-infrastructure.eu/resource/ao/cat/1.1/> 
PREFIX skos: <http://www.w3.org/2004/02/skos/core#>
PREFIX time: <http://www.w3.org/2006/time#>
PREFIX ariadneplus: <https://ariadne-infrastructure.eu/aocat/>
INSERT {
    GRAPH <https://ariadne-infrastructure.eu/ariadneplus::ads::periodoplus> {
        ?temporal aocat:has_period ?periodO .
        ?temporal aocat:from ?temporalFrom .
        ?temporal aocat:until ?temporalUntil .
    }
}
WHERE {
	?temporal aocat:has_native_period ?native_period . 
    ?native_period skos:prefLabel ?native_label .
    optional {
        ?periodO skos:altLabel ?native_label .
        ?periodO skos:inScheme	<http://n2t.net/ark:/99152/p0kh9ds> .
        ?periodO time:intervalStartedBy ?intervalStartedBy .
        ?intervalStartedBy skos:prefLabel ?temporalFrom .
        ?periodO time:intervalFinishedBy ?intervalFinishedBy .
        ?intervalFinishedBy skos:prefLabel ?temporalUntil .
    }
}